/*
 * To change this template, choose Tools | Templates
 * and open the template in the editor.
 */
package _2_Servlet;

import _1_Bean.LoginBean;
import _4_Mapper.LikeMapper;
import java.io.IOException;
import java.io.PrintWriter;
import javax.servlet.RequestDispatcher;
import javax.servlet.ServletException;
import javax.servlet.http.HttpServlet;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;
import javax.servlet.http.HttpSession;

/**
 *
 * @author Lc.Danh
 */
public class Like extends HttpServlet {

    /**
     * Processes requests for both HTTP
     * <code>GET</code> and
     * <code>POST</code> methods.
     *
     * @param request servlet request
     * @param response servlet response
     * @throws ServletException if a servlet-specific error occurs
     * @throws IOException if an I/O error occurs
     */
    protected void processRequest(HttpServletRequest request, HttpServletResponse response)
            throws ServletException, IOException {
        response.setContentType("text/html;charset=UTF-8");
        PrintWriter out = response.getWriter();
        try {
            HttpSession s = request.getSession();
            LoginBean account = (LoginBean) s.getAttribute("Account");
            if (account == null || account.getuID() == -1) 
            {
                response.sendRedirect("./Login");
                return;
            }
            if (request.getParameter("p")==null)
                response.sendRedirect("./Post");
            if (request.getParameter("like").equals("ok"))
            {
                //Like
                LikeMapper.Like(Integer.parseInt(request.getParameter("p")), account.getuID());
                response.sendRedirect("./Post?p="+request.getParameter("p"));
                return;
            }
            else if (request.getParameter("like").equals("no"))
            {
                //Unlike
                LikeMapper.UnLike(Integer.parseInt(request.getParameter("p")), account.getuID());
                response.sendRedirect("./Post?p="+request.getParameter("p"));
                return;
            }
        } finally {            
            out.close();
        }
    }

    // <editor-fold defaultstate="collapsed" desc="HttpServlet methods. Click on the + sign on the left to edit the code.">
    /**
     * Handles the HTTP
     * <code>GET</code> method.
     *
     * @param request servlet request
     * @param response servlet response
     * @throws ServletException if a servlet-specific error occurs
     * @throws IOException if an I/O error occurs
     */
    @Override
    protected void doGet(HttpServletRequest request, HttpServletResponse response)
            throws ServletException, IOException {
        processRequest(request, response);
    }

    /**
     * Handles the HTTP
     * <code>POST</code> method.
     *
     * @param request servlet request
     * @param response servlet response
     * @throws ServletException if a servlet-specific error occurs
     * @throws IOException if an I/O error occurs
     */
    @Override
    protected void doPost(HttpServletRequest request, HttpServletResponse response)
            throws ServletException, IOException {
        processRequest(request, response);
    }

    /**
     * Returns a short description of the servlet.
     *
     * @return a String containing servlet description
     */
    @Override
    public String getServletInfo() {
        return "Short description";
    }// </editor-fold>
}
